Effects of surface roughness on the stability and dynamics of microtubes conveying internal fluid
Sign Up to like & getrecommendations! Published in 2021 at "Microfluidics and Nanofluidics"
DOI: 10.1007/s10404-021-02468-1
Abstract: In this article, the instability and dynamic characteristics of fluid-conveying microtubes with surface roughness are studied. A theoretical model is presented to describe the dynamic behaviors of rough microtubes by introducing correction factors, which account… read more here.
Keywords: critical velocity; surface roughness; effects surface; internal fluid ... See more keywords
Particle Bonding Mechanism in Cold Gas Dynamic Spray: A Three-Dimensional Approach
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Thermal Spray Technology"
DOI: 10.1007/s11666-017-0652-4
Abstract: Cold gas dynamic spray (CGDS) is a surface coating process that uses highly accelerated particles to form the surface coating. In the CGDS process, metal particles with a diameter of 1-50 µm are carried by a… read more here.
Keywords: spray; velocity; gas; process ... See more keywords
Critical Velocity of Short Floating Slab Track Using Alterable Element Method Considering Wheel-Rail Contact Loss
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Shanghai Jiaotong University (science)"
DOI: 10.1007/s12204-020-2213-0
Abstract: In actual line operation, the critical velocity is one of the key physical quantities of rail design owing to its great influence on the riding comfort and safety of vehicles due to the wheel-rail contact… read more here.
Keywords: rail contact; velocity; critical velocity; wheel rail ... See more keywords
Numerical and experimental study on the effects of a ceiling beam on the critical velocity of a tunnel fire based on virtual fire source
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Thermal Sciences"
DOI: 10.1016/j.ijthermalsci.2020.106635
Abstract: Abstract Ceiling beams, such as smoke screens, supporting beams, and ceiling pipelines, exist in several types of tunnels. The ceiling structure of a tunnel has a significant influence on smoke propagation. This study determines the… read more here.
Keywords: tunnel; ceiling; fire; ceiling beam ... See more keywords
Railway critical speed assessment: A simple experimental-analytical approach
Sign Up to like & getrecommendations! Published in 2020 at "Soil Dynamics and Earthquake Engineering"
DOI: 10.1016/j.soildyn.2020.106156
Abstract: Abstract When constructing a new railway line, its long length means there are significant financial implications associated with determining the geodynamic ground properties. Therefore, this paper presents recommendations to optimize the efficiency and depth of… read more here.
Keywords: railway; speed; critical velocity; experimental analytical ... See more keywords
Critical velocity and backlayering distance in tunnel fires with longitudinal ventilation taking thermal properties of wall materials into consideration
Sign Up to like & getrecommendations! Published in 2018 at "Tunnelling and Underground Space Technology"
DOI: 10.1016/j.tust.2017.12.020
Abstract: Abstract A set of tunnel fire experiments using a 1:20 scale model tunnel was conducted taking into account the scaling of heat conduction through the tunnel walls. The critical velocity and backlayering distance measured in… read more here.
Keywords: velocity backlayering; backlayering distance; tunnel; critical velocity ... See more keywords
Study on the critical velocity for smoke control in a subway tunnel cross-passage
Sign Up to like & getrecommendations! Published in 2020 at "Tunnelling and Underground Space Technology"
DOI: 10.1016/j.tust.2019.103234
Abstract: Abstract The critical velocity of subway tunnel cross-passage was investigated since the smoke control mode is different from that of road tunnel and larger blockage effect of train need to be given priority. In order… read more here.
Keywords: cross passage; critical velocity; velocity; tunnel ... See more keywords
The Motion Behavior of Micron Fly-Ash Particles Impacting on the Liquid Surface
Sign Up to like & getrecommendations! Published in 2022 at "ACS Omega"
DOI: 10.1021/acsomega.2c02660
Abstract: The motion behavior of particles impacting on the liquid surface can affect the capture efficiency of particles. It was found that there are three kinds of motion behaviors after particle impact on the liquid surface:… read more here.
Keywords: surface; rebound; critical velocity; particles impacting ... See more keywords
Droplet squeezing through a narrow constriction: Minimum impulse and critical velocity
Sign Up to like & getrecommendations! Published in 2017 at "Physics of Fluids"
DOI: 10.1063/1.4990777
Abstract: Models of a droplet passing through narrow constrictions have wide applications in science and engineering. In this paper, we report our findings on the minimum impulse (momentum change) of pushing a droplet through a narrow… read more here.
Keywords: droplet squeezing; critical velocity; minimum impulse; constriction ... See more keywords
Observation of superfluidity in a strongly correlated two-dimensional Fermi gas
Sign Up to like & getrecommendations! Published in 2021 at "Science"
DOI: 10.1126/science.abc8793
Abstract: Finding the breaking point A superfluid can flow without viscosity but only if the speed of the flow is lower than the so-called critical velocity. Sobirey et al. measured the critical velocity of a system… read more here.
Keywords: gas; superfluidity; fermi; critical velocity ... See more keywords
Effect of the Particle Size on the Near-Wall Turbulence Characteristics of the Polymer Fluid Flow and the Critical Velocity Required for Particle Removal from the Sand Bed Deposited in Horizontal Wells
Sign Up to like & getrecommendations! Published in 2020 at "Energies"
DOI: 10.3390/en13123172
Abstract: Water-based polymer drilling fluids are commonly used for drilling long horizontal wells where eliminating the drilling fluid-related formation damage and minimizing the environmental impact of the drilling fluids are the main concerns. An experimental study… read more here.
Keywords: particle size; sand; critical velocity; particle ... See more keywords